Working Papers


“Tradability and the Labor-Market Impact of Immigration: Theory and Evidence from the U.S.” (contains the online appendix)

with Ariel Burstein, Gordon Hanson, and Lin Tian, June 2017

Presentation slides (July 2017)


 “Changes in between-group inequality: computers, occupations, and international trade”

with Ariel Burstein and Eduardo Morales, September 2016 (1st draft December 2013)


“Factor Prices and International Trade: A Unifying Perspective”        

with Ariel Burstein, October 2011 (1st draft June 2010)

Revise and resubmit at Journal of Economic Theory

Previously circulated under the name “International Trade Patterns, the Skill Premium, and Heterogeneous Firms”


Published and Forthcoming Papers

(Published versions have been posted with permission of the journals where they appeared. Standard copyrights rules apply. Download and print for personal use only.)


“International Trade, Technology, and the Skill Premium”

with Ariel Burstein, February 2016

Presentation slides (April 2016)

Forthcoming at Journal of Political Economy

Previously circulated under the name “Globalization, Technology, and the Skill Premium: A Quantitative Analysis” and the name “Globalization, Technology, and the Skill Premium”


“Comparative Advantage and Optimal Trade Policy”

with Arnaud Costinot, Dave Donaldson, and Ivαn Werning

Presentation slides

Quarterly Journal of Economics, 2015, Vol. 130, Issue 2: 659-702.


“Beyond Ricardo: Assignment Models in International Trade”

with Arnaud Costinot

Online Appendix

Annual Review of Economics, 2015, Vol. 7: 31-62.


“Importing Skill-Biased Technology”        

with Ariel Burstein and Javier Cravino

Online Addendum

Presentation slides

American Economic Journal: Macroeconomics, 2013, Vol. 5, No. 2: 32-71.


“An Elementary Theory of Global Supply Chains”

with Arnaud Costinot and Su Wang

Online Addendum

Presentation slides

Review of Economic Studies, 2013, Vol. 80, Issue 1: 109-144.


“Global Supply Chains and Wage Inequality”

with Arnaud Costinot and Su Wang

Presentation slides

American Economic Review Papers and Proceedings, 2012, Vol. 102, No. 3: 396-401.


 “Spatial Price Discrimination with Heterogeneous Firms”

Journal of Industrial Economics, 2011, Vol. 59, No. 4: 661-676.


“Matching and Inequality in the World Economy”

with Arnaud Costinot

Presentation slides

Journal of Political Economy, 2010, Vol. 118, No. 4: 747-786.


“Spatial Competition with Heterogeneous Firms”

Presentation slides


Journal of Political Economy, 2008, Vol. 116, No. 3: 423-466.


“Institutions and Moral Hazard in Open Economies”

Journal of International Economics, 2007, Vol. 71, No. 2: 495-514.